<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
<%@ taglib prefix="sec" uri="http://www.springframework.org/security/tags" %>
<%@ page import="org.springframework.security.ui.AbstractProcessingFilter" %>
<%@ page import="org.springframework.security.ui.webapp.AuthenticationProcessingFilter" %>
<%@ page import="org.springframework.security.AuthenticationException" %>
<%@ page import="org.springframework.security.BadCredentialsException" %>